Not upset. I just think it's funny how men think they're the only ones who have to put up with the same old sex, same old body, same old everything over the years. Marriage is a decision to accept all of that and more. If that's not what you want, don't get married. That's all.
I say live it up as much as you can when you are 20-30, then marry and have a few kids, get divorced and live it up as much as you can when you are 50-80.